My first wax was actually two - bought at the same time. Dodo Juice Banana Armour and Dodo Juice Orange Crush - both in glass jars. OC is probably the most used wax I own (in terms of level in the pot). Didn't use BA too much as it was a harder wax but still nice to use, still got both of them too.

my first wax was Turtle Wax Hard shell, brought it back from the States, was my first "hard wax"
My first polish was 1Z and Commedant 4.
The Commedant range was for professional use in body shops, and made T cut look like water, very good on weathered paint, but easy to strike through by hand.